Steam-transformer.



' PATBNTED-JAN. 1, 1907.

Ja 722a j c'iven'cer STEAM TRANSFORMER. APPLICATION FILED JUNE 8.11706.

* Tori/ll whom it Lin/my concern Be it'known that I, Srnuc'na Orrs, a citizenof' the United States, residing at Chicago,

UNITE ST -Es PATENT. orrron.

SPENCER. OTIS, OF'OHICAGO, iLL Nois, Assienoa To NATIONAL PATENT.

. HOLDING COMPANY, or RAPID crrr, SOUTH DAKOTA, A coaromrrou OF sou'ru DAKOTA; I

STEAM-TRANSFORMER.

1R0. 840,158. Specification of Letters Patent. Patented Jan. 1', 1907.-

1 s u twn filed June 8. 1906. Serial No 820,762.

- in the county of Cook and Stateof Illinois,

'have invented certain new and useful T m- 'provements in steam Tra'nsfermers, of which the following is a specification.

.' My invention relates to steam-transfoimrs andhasfor its'object to produce a device in which superheated steam at high pres sure may be reduced in' temperature, the

pressure lowered, and at the same time the s forth and claimed.

amount of working fluid increased.

' To this end my invention consists in the combinations and details hereinafter i set In the figureof the drawing I have shown a longitudinal elevation, partly in section, of my improved transformer.

Referring to the drawing, in which I hm shown my device s ecifically applied to a nozzle for the intro notion of steam to the working parts, of a steam-turbine, a re resents the end of the nozzle at the point w "ere thesteam is admitted to the turbine.

represents an expansion-chamber formed adjacent the nozzle, Steam is introduced into the end a of the expansion-chamber, thisend being opposite the nozzle end. The walls of the opening a? are suitably screwthreaded and receive a casing t, suitably screw-threaded at one end. This casing b is hollowed, as shown, and receives a block a,

formed with a longitudinal assage-way c.

'The block c is circumferential y reduced at its forward end, thereby forming a chamber 6' in the casing b. I also provide passageways 6,

leading from the chamber 1) to the orifice b and it will be observed that the passage-way;

0' also communicates with this orifice. Suitably connected with the passage-way c is a: steam-pipe f, and suitab y connected with" the chamber 1 is a water-supply pipe d.

In operation superheated steam at high temperature and athigh pressure-such as, for instance, is generated in boilers of the flasher typeis admitted to the expansum-chamber a through the passage-way c.

As is'well known, boilers of the flasher. type are ada ted for the production of small quantities 0 steam at high pressure and temperature. It is not essential that steam at this temperature be used for the purpose of operating a steam turbine. Conse order to reduce the temperature 0 'the steam working fluid I propose to admit uently= in and at the same time increase the fiantity of t ough the 'pi e d a suflicient quan ity of water which W1 1 be drawn through the passages d by the steam entering the chamber through the passage-way c" in the form of fine "spray. The water at this point will be converted, into steam by the abstraction of partofthe heat from the superheated steam, as will be readily understood.

In order to regulate the supply of water so that the amount of waterrintmduced'may not be greater than can be converted into steam without reducing the temperature of j the steam within the chamber b'elow the'de sired point, thus keeping the temperature of the steam within the chamber approximately at the desired .point,--I provide in the steam supply pipe f a thermostat e, connected to a valve d in the water-supply piped. The thermostat/is connected" to the valve by suitable connections and idiaphragms d, -e,

and e in the well-known manner. When the temperature of theincoming steam falls below a certain point, the thermostat will operate to shut off the supply of water.

Should'it rise beyond a predetermined point, the thermostat will operate to' open the valve (1, thus admitting 'water tothe. eapan- -sion;chamber. It is desirable to'attach the thermostatic regulating device" to thesteamsupply-pipe,,as a'much more sensitive regu lation may be obtained at'this point. It is of course possible to introducethe thermostat into the expansion-chamber, regulating the supply of water by the-temperature of steam within the 'chemterj' and I have described and elairned such-a device in an-application plication.

"It will be seen that I have-provided a device in which I use to advantage the.- exces,s temperature of superheated steam to convert the water supplied to the chamber into, steam, thus furnishing an additionalquantity, of working fluid to be supplied to theleng'ine,

or 'Letters Pat'ent filed with the present ap-- inn and it will also be seen that my device automatic in its operation.

I claim 1. In a steam-trensformer,

I chamber, 7.

means .for into the chemregulating the amount of-water.

3. In a steam-transformer, a chamber, a

steam-inlet connected. to a source of steamsupply, a water-inlet, a water-supply pipe connected to the water-inlet, a valve in the water-supply pipe, etlierniostat in the steamsupply pipe, and means connecting the thermostat with the valve to opcmte the valve.

SPENCER OTIS. Witnesses: I

' .AUND L. SAvous,

W. T. JONES. 

